The additional charge is a flat 15% on any mattress or topper.

To work out the price of a custom size mattress or mattress topper follow these steps:

Example: You want a FF23 TopSleep Memory Mattress 140x200cm.
Always go to the next size above: In this case look at the price of the FF23 TopSleep Memory Mattress King size 150x200 = £449.99 X 15% = £67.49
Now add them together and the Total price delivered to your door is £517.48
Now call 0845 2270382 or click and send the form below.